COMET AG
Herrengasse 10, CH-3175 Flamatt
Tel. +41 31 744 9000, www.comet-xray.com
XRCA-3001-WA, Doc.-No. 50005554
Page 5 of 16
1.
Description
The cooling unit WLK 32 is designed to provide a continues flow of cooling fluid at a
constant temperature. Water circulates between the cooling unit and the heat source.
The water is chilled by an air-cooled refrigeration system (refrigerant R 134A).The
cooling unit has a main switch to start the refrigeration system. The water level in the
reservoir is supervised by a level switch. If the level drops below minimum, the refri-
geration cycle stops and the pilot lamp "Water level low" is activated and the safety
circuit is activated.
The maximum cooling capacity of the cooling unit depends on the ambient and the
fluid temperature. The cooling capacity is 3000W related to 40 °C ambient temperature
and +25 °C ± 2°C fluid temperature. Cooling hoses are connected to the cooling
unit via quick connectors. Water inlet and outlet are marked with symbols:
Inlet:
O
Outlet:
O
.
The water outlet temperature is monitored by an electronic temperature controller.
This controller is provided with additional contacts to prevent freezing and for
temperature maximum signal.
The signals "temperature maximum" and "water level low" are combined in a potential
free safety circuit. The water pressure of the pump is limited by an adjustable
bypass valve.
Note: If the ambient temperature is below the adjusted anti freezing
temperature the refrigeration system does not operate! Anti freezing,
temperature maximum and bypass valve is factory adjusted according to
specification.